Publisher
- Geological Survey (U.S.)153
- California. Department of Water Resources121
- National Atlas of the United States57
- California Geological Survey41
- California. Division of Mines and Geology18
- County of Santa Cruz Information Services Department17
- Monterey County (Calif.)14
- Santa Clara County (Calif.). Planning Office14
- Monterey County (Calif.). Planning Department13
- California. Dept. of Conservation.9
- Bay Area Open Space Council8
- Jasper Ridge Biological Preserve (Agency)6
- California. Department of Fish and Game. Marine Resources Region5
- Humboldt County Planning and Building Department4
- Inyo County (Calif.). Information Services Department4
- San Joaquin County (Calif.). Community Development Department4
- World Data Center for Paleoclimatology4
- Riverside County (Calif.). Geographic Information Services3
- Santa Clara Valley Water District (Calif.)3
- County of Santa Clara. Geographic Information Services2